In the question-and-answer session at Google's hip, exposed-ductwork office, Anderson said he lived in a "world of paradoxes" by making a living editing and writing while raising children who have come to expect everything in that world to be free.

Mr. Blankenship says steps to improve your home's shell -- such as adding insulation, replacing ductwork, getting a central-air cooling system and replacing water heaters -- are the most cost-effective home improvements.